Machine for trimming and beading wheelbarrow-trays.



' N8. 888,429. PATBNTBD MAY 19, 1908.

. J. M. SKINNBR. MACHINE POR TRIMMING-AND READING WHEELBARROW TRAYS.

APPLICATION FILED DEO.23,1907.

4 SHEETS-SHEET 1.

WTNESSES: INVENTOR. C. M?? M'M/U, #7M 8 M@ WWW No. 888,429. y PATENTEDMAY 19, 1908.

J. M. SKINNER. MACHINE POR TRIMMING AND BEADING WHEELBARROW TRAYS.

APPLICATION FILED DEO.23.1907.

4 SHEETS-SHEET 2.

1m: NuRnls FsERs ce., wAsmNcfoN. n. c,

No. 888,429. PATENTED MAY 19, 1908. J. M. SKINNER. MACHINE FOR TRIMMINGAND READING WHEELBARROW TRAYS.

APPLICATION FILED DEO.23.1907.

4 SHEETS-SHEET 3.

WITNESSES: mvENToB gj@ Maz; 4% fama@ @@MTM 1n: Nokms PETERS cc.,wAsmNaron, n. c

No. 888,429. PATENTED MAY 19, 1908. J. M. SKINNER.

MACHINE FOR TRIMMING ANDBEADING WHEELBARROW TRAYS.

APPLICATION FILED DEO.23.1907.

4 SHEETS-SHEET 4,

WITNESSES: y INVENTOR.

ms NoRRls rsrERs co., wAsHmcmN, n. c.

UNITED STATS PATENT OFFICE.

JOHN M. SKINNER, OF TOLEDO, OHIO, ASSIGNOR TO THE TOLEDO HIEELBARROWCOMPANY, O F TOLEDO, OHIO, A CORPO RATION OF OHIO.

MACHINE FOR TRIMMING AND BEADING WHEELBARROW-TRAYS.

Application filed December 23, 1907.

To all whom it Imay concern.'

Be it known that l, Jeux M. SKINNnn, a citizen of the United States,anda resident of Toledo, in the county of Lucas and State of Ohio, haveinvented certain new and useful Improvements in Machines for 'lrimmingand Beading heelbarrow -Trays or the Like; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to the figures of reference marked thereon, which form a part ofthis specification.

My invention relates to machines for progressively trimming andbeading'wheelbarrow trays or other similar objects of regular orirregular form other than a circle, and has reference more particularlyto improvements in the trimming and beading mechanisms thereof.

The primary object of my invention is the provision in combination withthe trimming mechanism of simple and improved means for causing thetrimming wheels to be positively actuated or guided to maintain theiraxes in constant perpendicular relation to their intended irregular pathof trimming movements at their point of engagement with the work, whenthe work and the trimming mechanism have relative revoluble movements,whereby to ell'ect a more perfect and efficient operation of thetrimming mechanism than has heretofore been accomplished in machines ofthis class.

Other objects of my invention will be apparent` by reference to thefollowing detailed description.

The operation, construction and arrangement of the parts of my inventionare `fully described in the following specification, and illustrated inthe accompanying drawings, in which,-

Figure 1 is a top plan view of the machine with the work-clamping partsremoved. Fig. 2 is an enlarged top plan of the trimmingmechanism and anassociated portion of the cam-table. Fig. 3 is a side elevation thereofwith the cam-table in section on the dotted lines :t in Figs. 1 and 2.Fig. 4 is an enlarged top plan view of one of the beadingheads. Fig. 5is a side elevation thereof with portions of the cam-table and work-lsupport in cross-section.v Fig. 6 is a side ele- Speeication of LettersPatent.

Patented May 19, 1908.

Serial No. 407,837.

vation of the machine with its associated work-holder and lluid pressurecontrolling means. Fig. 7 is a central longitudinal section of a portionof the trimming-head and its associated parts, and Fig. 8 is a centralcross-section of one of the beading-rolls.

Referring to the drawings, 1 designates the base or bed plate upon whichthe operating mechanism is mounted, said base being supported on legs 2or in any other suitable manner.

Mounted for free rotary movement on the base 1 is the rotary table 3,which has its shaft suitably journaled in a pedestal bearing in the baseand its outer portion resting on anti-friction rollers 4, which arejournaled in brackets 5 carried by the base, as shown in Fig. 5. Thetable 3 is circular in form and is provided on its periphery with teeth6, which mesh with a `worm carried by the drive-shaft 7, wherebyrotation may be communicated from the worm to the table. On the uppersurface of the table 3 is provided a plurality of endless cam-grooves orways, which are shown in the drawings as being three in number anddesignated 8, 8 and 8l. Disposed centrally of the table within the innerone of these grooves or ways is the work-support or pedestal 9, whichhas its top elevated above the table surface and fashioned to conform tothe contour of the work 9 to be placed thereon. In the drawings thework-support is shown as being of rectangular construction with roundedcorners to conform to the general shape of a drawn sheet-metalwheelbarrow tray, and the cam-grooves or ways S and S are of like form,as will hereinafter be more fully described.

Carried at the lower end of a plunger 10 above the worksupport orpedestal 9 is a work-holder 1.1, which, when lowered, is intended tocooperate with the work-support to hold the work firmly thereto whilebeing operated on. The plunger 1() is provided at its upp'er end with apiston-head (not shown), which operates in the vertical cylinder 1.2that is suspended from an overhead beam or other suitable support 13.The admission of operating fluid, whether it be conipressed air or other`fluid, to thel cylinder is controlled by the lever 11i, which connectswith a suitable valve.

Secured to and .rising from the base or bedplate 1 at the sides of thetable 8 are a plurality of pedestals 15, which have their top portionsfashioned to form guide-boxes which stand radially of the table and inwhich the bottom plates 16 or 45, carrying the trimming orbeading-heads, are mounted for radial sliding movements relative to thetable.

The trimming-head comprises a base-piece or lower jaw 17, which ismounted on its bottom plate 16 for longitudinal-sliding movementrelative thereto, and the upper jaw 18, which is angled upward from thebase-piece 17 intermediate its ends and inward thereover. Thetrimming-head is slidingly held to the plate or member 16 by thecoaction with its upper side edges of the removable guide-box plate 19,andit cooperates with said plates 19 to retain the member 16 in theguide-box, as shown. A swivel-head or yoke 20 is mounted for horizontalpivotal movement between the jaws 17 and 18 of the trimming-head and isprovided with trunnions 21, which are journaled in bearings in the jawterminals, as shown in Fig. 7, or it can be journaled to itscarrying-head in any other suitable or convenient manner.

The swivel-head or yoke 20 carries the upper and lower shear-wheels 22and 23 at the end thereof disposed toward the table 3. The wheel 22 ismounted on a spindle 24, which works through a vertically adjustableblock 25 mounted in the swivel-head, and the wheel 23 is mounted on thespindle 26, which is iixedly secured to the lower portion of theswivel-head, as shown in Fig. 7, or in any other suitable manner. Theblock 25 is carried at the lower end of an adjustinglscrew 27, which isthreaded through the top portion of the swivel-head or yoke and passesupwardly through a transverse segmental slot 28 in the upper jaw 18 ofthe trimming-head. The spindle 24 has a vertical adjusting movement in avertically broadened socket 29 in the swivel-head and bears, at itsinner end against the end of an adjusting screw 30, which is threaded inthe swivel-head at the base of said socket and adapted to be adjusted tomaintain the shear-wheel 22 in shearing engagement with its companion.The vertical centers of the shearing faces of the shear-wheels 22 and 23stand in direct axial alinement with the centers of the trunnions onwhich the swivelhead or yoke 20 swings. The trimminghead is adjustedrelative to its carrying plate or member 16 by the hand-screw 31, whichhas its inner end threaded through a horizontally-pivoted head 32 thatis carried by the standards 33 rising from the base-plate 17. The outerportion of the screw 31, when lowered, is intended to seat in an incut34 in the end-pieceor upright 35 of the plate or member 16 and is heldagainst longitudinal movemen-t relative thereto by the annularenlargement 36 and hand-wheel 37 shouldering against opposite faces ofsaid end-piece. It is thus apparent that when the screw-shank isdisengaged from the end-piece 35 the trimming-head may be freely movedlongitudinally of the base-plate 16, and that when the screw-shank islowered in engagement with said end-piece the trimming-head and itsbase-plate 16 may be caused to have relative longitudinal adjustment byturning the screw.

Mounted on a vertical stud pivot at the under side of the inner endportion of the base-plate 16 of the trimming-head is a roller 38, whichis intended to operate in the camgroove or way 8 of the table to causethe shear-wheels 22 and 23 to follow the course of such groove as thetable 3 and trimminghead relatively revolve, it being understood thatthe course of the groove conforms to the perimetric contour of the workwhen trimmed.

Projecting laterally from the lower side portion of the swivel-head oryoke 2() in the direction of shearing-movement of the cutters is the arm39, which is adjustably secured to the swivel by bolts 40 passingthrough slots in its wall plate, or in any other suitable manner, andcarries the block 41 on its under side. This block is adapted to havelongitudinal adjustment on the arm 39 and is held in adjusted positionby a bolt 42, which passes through a longitudinal slot 43 in the arm.Mounted on a vertical stud pivot at the under side of the block 41 is apilot-roller 44, which is intended to travel in one of the other camgrooves 8, 8a and 8b than that in which the roller 38 travels, and isshown in the present instance as traveling in the outer groove 8b. Thepurpose of the pilot-roller 44 is to control the movement of theswivel-head relative to the trimminghead so that the shear-wheels willbe positively guided to follow the intended course oftrimming movementand be maintained in constant parallelism with such course at the pointof bite. To accomplish this it is found that the grooves 8 and 8b inwhich the rollers 38 and 44 travel should parallel each other except atthe corners, at which points the groove 8b is vbulged slightlyoutwardly, at 8. These bulges are so fashioned as to cause thepilot-roller 44, as it enters and passes therethrough, to swing theswivelhead 2O relative to its carrying-head as the differentv centers ofthe circle of the corner of the work being operated on and the table 3may require to maintain the axis of the shear-wheels perpendicular tothe work edge at the point of shearing contact, as shown in Figs. 1 and2 by the lines a-a and b-b. Due to the pilot-roller 44 preceding theswivel-head, the major portion of each bulge 8C is disposed on the farside of the groove or race corner with which it is associated.

Each beading-head comprises the bottomplate 45, which is mounted forlongitudinal sliding movements in the guide-box of its pedestal 15, andthe top-plate 46, which is supported by and movable in the guide-boxwith and relatively to the bottom-plate. The bottom-plate carries avertical studpivot on the under side of its inner end portion on whichis mounted a roller 47 for traveling in the intermediate cam groove orrace S of the table On the upper side of the forward end portieri of theplate 46 is a boss or pedestal 4S, which either carries or forms apedestal bearing for the spindle on which the beading-roll 49 ismounted.

The roll 49, as shown in S, comprises the body portion 50, which isformed with a lower annular flange 51 intended to underlie the flange ofthe work, the hardened groove bead-forming-rim 52, which encircles theupper reduced portion of the body 50, and the top-plate or disk 53,which is screwed to the body 50 and coacts with the rim 52, to retain iton the body. This form` of roll forms a very efficient one for beadforming purposes. The groove S'LL is preferably so disposed relative tothe work flange, and the beading-roll 49 so dimensioned, that the aXesof the guide-roller 47 and beading-roll 49 are in approximate alinementwhen the latter is operating to form a bead on the work, as shown inFig. 5. It is apparent, however, that the beading-rolls employed larenot restricted to this construction.

The longitudinal movement of the topplate 46 relative to thebottom-plate 45 is controlled for nice adjustment by the handscrew 54,which works through a swivelblock 55 carried by the uprights 56 and hasits outer end portion adapted, when lowered in horizontal position, toshoulder in an incut 57 in the end-piece or upright 58 at the outer endof the bottom-plate in a similar' manner to the coaction of the screw 31of the trimming-head with its cooperating parts.

In the practical operation of my machine, the trimming and beading-headsare all withdrawn after each trimming and beading operation to permit aremoval of the beaded work and the securing to the work-pedestal 15 ofan untrimmed tray or other article. This withdrawal is quicklyel'l'ected by raising the adjusting-screws 51 and 54 from engagementwith their respective end-pieces 35 and 5S, after iirst giving thescrews 54 a few turns to cause them to recede to their initialflange-engaging positions, and then manually 'drawing the trimming andbeading mechanisms outwardly on their respective bottomplates out ofinterfering position with the work, thus facilitating a quick and easyadjustment of said mechanisms to engage o1' release the work. When anuntrimmed tray has been positioned on the work-pedestal, thetrimming-head is moved inwardly on its bottom-plate until theshear-wheels come in lcontact with. the work Vflange, when it is slowlymoved inward to permit the shearwheels to gradually work through thellange until adjusted to cut a suitable marginal strip from the flange,the trinuning-head then being locked against radial movement independentof its bottom-plate by dropping the screw 251 in engagement with theincut in the end-piece 35. The trimming operation being completed, thebeading-heads are moved inwardly to permit the screws 54 to lock shapeand to maintain the shearing surfaces of the shear-wheels in constantparallelism with the rim at the point of bite thereof, and thebeading-rolls 4E) are automatically adjusted to follow the contour ofthe tray rim due to the guide-roller 47 traveling in the cam-groove orrace 81.

l wish it understood that l do not desire to be restricted to the exactdetails of construction and arrangement of the parts shown anddescribed, as obvious modifications will occur to persons skilled in theart.

-Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is,

1. in a machine of the class described, the combination of a revolublework-holder, a swivel-head adjustable radially ol"l the workholder,shear-wheels carried by the head for trimming the work, means forautomatically adjusting the head radially of the work to cause thelength of radial lines intersected by the shear-wheels to vary as thework-holder revolves, means for mechanically adjusting the head relativeto the work, and automatic .means positively controlling the swivelmovements of the head to maintain the axes of the shear-wheelsperpendicular to the intended line of cut at the point of bite of thewheels.

2. .ln combination in a machine of the class described, a work-holderand a swivel-head capable of relative revolving movements, and two camsof di'll'erent shape encircling the work-holder, said swivel-head havingparts cooperating with said two cams, one cam serving to adjust the headradially of the work-holder and the other to control the swivelmovements of the head.

3. .ln combination in a machine for trimming wheelbarrow-trays or thelike, a workholder and a swivel-head. capable of relative revolvingmovements, shear-wheels carried by the head for trimming the Work, meansi arm projecting from the head and adapted for automatically movingI thehead radially for differential adjustment relative thereto,

of the Work to cause the Work to be trimmed to a predetermined shapeother than a circle as the Work-holder and head relatively revolve, andan endless cam encircling the Work-holder and cooperating with a part ofthe swivel-head to positively control the swivel movements of the headas the Workholder and head relatively revolve.

4. In combination in a machine for trimming WheelbarroW-trays or thelike, a Workholder and a swivel-head capable of relative revolvingmovements, shear-wheels carried by the head for trimming Work held bysaid holder, means for automatically moving the head radially of theWork to cause the Work to be marginally trimmed to a predetermined shapeother than a circle as the Work-holder and head relatively revolve,means for mechanically eHecting a radial adjustment of the head relativeto the Work, and a cam encircling the Work-holder and cooperating with apart of the swivel-head to positively control the swivel movements oithe head as thevvorkholder and headrelatively revolve.

5. In combination in a machine 'for trimming WheelbarroW-trays or thelike, a Workholder and a swivel-head capable of relative revolvingmovements, shear-Wheels carried by the head for trimming' Work held bythe holder, means for automatically moving the head radially of the Workto cause the Work to be marginally trimmed to a predetermined shapeother than a circle as the Work-holder and head relatively revolve, anarm adjustably projecting from the head, a cam encircling theWork-holder and cooperating With the' arm to positively control theswivel movements oi" the head as the Work-holder and head relativelyrevolve.

6. In combination in a machine of the class described, a Work-holder anda swivel-head capable of relative revolving movements and the latterbeing capable of radial adjustment relative to the holder, shear-Wheelscarried l by thehead, a plurality of cam-Ways encircling theWork-holder, one of said Ways being fashioned to conform to theperimetric con'- tour of the Work When trimmed and forming a guide forautomatically controlling the radial adjustment of the head, and a partcarried by the head and cooperating with one or the other of said Waysto positively control the swivel movements of the head to maintain theaxis of the shear-Wheels perpendicular to the intended line of cut atthe point of bite of the wheels as the holder and head relativelyrevolve.

7. In combination in a machine lor trimming WheelbarroW-trays or thelike, a Workholder and a swivel-head capable oi' relative revolvingmovements and the latter being capable of radial adjustment relative tothe holder, shear-Wheels carried by the head, an

and a cam-Way encircling the Work-holder and 'fixed relativethereto,said Way coperating With the arm to positively control the swivelmovements of the head as the. Workholder and head relatively revolve.

8. In a machine for trimming articles of any form other than a circle,the combination With a Work-support, of a trimmingf head adjustableradially to the Work-support, said Work-support and trimmer-head beingcapable of relative revolving movements, a swivel-head carried by thetrimming-head, shear-Wheels carried by the swivel, and independent cammeans for automatically moving the head radially of the Work-support totrim the Work in a predetermined shape and for automatically adjustingthe swivel-head to positively maintain the shear-Wheels in constantparallelism with the trimmed edge of the Work at the point of bite whenthe Work-support and trimmer-head relatively revolve.

9. In a machine for trimming Wheelbarrow-trays or the like, thecombination With the Work-support, of a trimming-head radiallyadjustable relative to the Work-support, said support and trimming-headbeing capable of relative revolving movements, a swivel-head carried bythe trimming-head and having an arm projecting laterally in advancethereof, shear-Wheels carried by the swivel-head, a pilot-member carriedby the arm, a cam fixedV relative to the Work-support and fashioned tocoperate with said pilot-member to automatically control the swivelmovement of the swivel-head to constantly maintain the axes of theshear- Wheels perpendicular to the predetermined line or' cut ofthe Workat the point of bite of the Wheels as the Work-support and trimming-headrelatively revolve, and means independent of said cam and pilot-memberfor automatically moving the head radially of the Work to cause theshear-Wheels to follow the intended line of cut.

10. In a machine for trimming Wheelbarrow-trays or the like, thecombination With the Work-support and a cooperating Workholder, of atrimming head automatically adjustable radially of' the Work-support,said support and head being capable of relatively revolving, aswivel-yoke carried by the trimming-head for horizontal swingingmovements and having a preceding arm projecting therefrom, shear-Wheelscarried by said yoke with their point of bite in vertical alinement withthe axis of the yoke, a pilot mernber adjustably carried by said arm,.and a cam 'lixedly encircling the Work-support and fashioned to coperateWith the pilot-member to automatically adjust the position of the yokerelative to its carrying head to constantly maintain the axes of theshear-Wheels perpendicular to the -predetermined line of cut of the workat the p'oint of bite of the Wheels as the Work-support and trimmingheadrelatively revolve.

11. 1n a machine for trimming wheelbarrow-trays or the like, thecombination with the .work-holder, of a trimming-head, said holder andhead beingl capable of relative revolving movements, means forautomatically adjustingthe head to the work as the holderand headrelatively revolve, a swivelyoke carried by the trimming-head and havinga pilot-member projectinglaterally therefrom in advance thereof,shear-wheels carried by the yoke, and cam means cooperating with thepilot-member to automatically adjust the position of the yoke relativeto its carrying-head to constantly maintain the aXes of the shear-wheelsperpendicular to the redeterinined line of cut at t-he point of bite ofthe wheels as the work-holder and trimming-head revolve.

12. 1n a machine of the class described, the combination with thework-holder, of a trinmier-head, the work-holder and head beingcapableof relative revolving movements, a swivel-yoke carried by thetrimming-heini, shear-wheels carried by the swivel-yoke, means forautomatically adjusting the trimming-head relative to the work-holder tocause the shear-wheels to follow a predetermined course other than acircle as said head and holder relatively revolve, means formechanically adjusting the trimming-head relative to the holder, and..means cooperating with a part of the swivel-yoke Yfor automaticallyadjusting the same to positively maintain the axes of the shaar-whee sperpendicular to the predetermined line of cut of the work at the pointof bite of the wheels as the workholder and trimming-head relativelyrevolve.

13. 1n combination, in a machine of the class described, a table, awork-holder mounted thereon, trimming and beading-heads associated withthe table and radially movable relative thereto, a plurality of cam-waysfixed to the table and encircling the workholder, two of said waysbeingl fashioned to conform to the shape of the work when trimmed andone cooperating with a part on the trimming-head and another cooperatingwith parts on the beading-heads to automatically move said headsradially of the table to cause the work to be marginally trimmed to apredetermined shape other than a circle and beaded as the table andheads relatively revolve, and a swivel-head carried by the trimming-headand carryingl shear-wheels, said swivel-head havingl a part working inone or the other of said cam-ways and coperating therewith to positivelycontrol the swingingI movements of the swivel-head during the trimming'operation.

14. 1n amachinc of the class describeiil, the combination with awork-hohler, of a plate slidingly mounted at the side thereof forlongitudinal movement toward and away from the work-holder, a trimminghead mounted on the plate for movement longitudinally thereof, ahorizontally pivoted member carried by the head, and an adjusting-screwthreaded through said member and adapted to be placed in removableengagement with a part of said plate to permit a screw adjustment of thehead thereon or swung out of engagement with the plate to permit a freemanual adjustment of the head thereon.

15. ln a machine of the class described, the combination with awork-holder, of a member slidingly mounted at the side thereof formovement toward and away from the workholder, a trimming-head mounted.on the member for .movement relative thereto toward and away from thework-holder, and an adjusting-screw threaded to a part of said head andadapted to lbe placed in removable engagement. with a part of saidmember to permit a screw-adjustment of the head thereon, or swunglaterally out of engagement with the member to permit a free manualadjustment of the head thereon.

lo. lna machine of the class (,lescribed, the comliination with awerk-holder, of a member slidingly mounted at the side thereof formovement toward and away from the workholder, a beading-heini mounted onthemcmber for movement relative thereto toward and away from thework-holder, and an adjusting-screw threaded to a part. of said head andadapted to be placed in removable engagement with a part of said memberto permit a screw-adjustment of the head thereon, or swung laterally outof engagement with the member to permit a free manual adjustment of thehead thereon.

17. 1n combination in a machine of the class described, a Dwork-holderand a trimming-head capable of relative revolving movements, means forautomatically adjusting the head radially of the work-holder as theyrelatively revolve, and. means movable both to e'llcct a mechanicaladjustment and to permit a manual adjustment of the head radially of thework-holder.

1S. ln combination in a machine of the class described, a work-holderand a beadinghead capable of relative revolving movements, means forautomatically adjusting the head radially to the work-holder as theyrelatively revolve, and means movable both to e'ii'ect a mechanicaladjustment and to permit a manual adjustment of the head radially of thework-holder.

1). 1n combination in a machine of the class described, a work-holderand a swivelhead capable of relative revolving movements, and. two camsencircling the workholder, said swivel-head. having a guide part in linewith its ai is of swivel movement and a guide part olf-set from suchaxis each of f@ esefraey which coacts with different Ones of said cams,j adjustable relative to said first part and coone cam serving to adjustthe head radially acting with the other cam means to control of thework-holder and the other to control the swivel movements of the head.the holder relatively revolve.

20. .In combination in a machine of the In testimony whereof, I havehereunto class described, a \Vorl liolcler and a swivelsigned my name tothis specification in the head capable of relative revolvingmcvepresence of two subscribing witnesses. ments, anc .se arate cammeans encirc in T the work-holdfli", said swivel-head having la JOHN M'SKINNER part coacting with one cam means to adjust /Vitnesses: the headradially of the work-holder as they C. W. OWEN, relatively revolve and apart differentiallyY l HAZEL B. HIETT.

the swivel movements of the head as it and 15

